Insulator supporting bracket



July 30, 1929. E. w. LUNDELL INSULATOR SUPPORTING BRACKET Filed May 1,1926 IN V EN TOR.

A TTORNEYS Patented July 30, 1929.

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ELMER W. LUNDELL, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR 'IO SEYLER MANU-FACTURING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPGRATION OF ?EITNSYLVANIA.

INSULATOR SUPPORTING BRACKET.

Application filed. May 1, 1926'. Serial No. 105,960.

This invention relates to improvements in insulator supporting brackets,and more par ticularly to insulator brackets of tne secondary rack typeof brackets or supporting structures.

In insulator supports of the character specified, the constructionusually compr ses a base, a plurality of insulator supporting armssecured to the base and pro ecting outwardly therefrom, a rod carried atthe outer ends of the arms, a series of insulators of the spool typemounted on the rod between the arms, and a number of bolt holes formedin the back or base through which bolts may be passed for securing thestructure to a wall, pole, or other means.

Supports of the type above described have proven unsatisfactory inseveral respects, for example, considerable trouble has been met withdue to the construction of the base member and the means co-operatingtherewith for securing the insulator supporting arms thereto. Troubleshave also been-encountered on account of the weak cross sec tional areaadjacent the rivet openings and through which the rivets pass.

Among the objects of the present invention are, to provide a bracketstructure of the type specified having a new and improved base portion;a base portion formed with improved means for rigidly securing theinsulator supporting arms or units to the base and to preventdisplacement thereof relatively to the base; to provide a constructionhaving a metallic mass of considerable cross sectional area adjacent therivet openings; a construction doing away with the separable spacingmembers; a base construction having supporting arm receiving meansproviding top, side, and bottom contacting or bearing surfaces for saidarms; and to provide a construction comprising a receiving means for theinner ends of the supporting arms whereby said arms may be readilypositioned therein in the operation of assembling the parts.

In the accompanying drawings, which illustrate an application of myinvention;

Figure 1, is an elevational View of a bracket or secondary rankstructure constructed in accordance with my invention.

Figure 2, a top plan view of the base portion of the bracket structure;

Figure 3, a part plan and a part sectional view, the section being takenon line 111 111: of Figure l;

Figure 4, a part plan and a part sectional view, the section being takenon line IV-IV of Figure 1, and

Figure'5, a view similar to Figure 4, showing a modified form.

Referring to the drawings and as preferred, my improved insulatorbracket 01' secondary rack construction comprises a'base formed of twosimilar angle plate members 5, each having a base portion 6, and avertically extending wall portion 7. The portions 6 of the said membersare formed with the usual bolt receiving openings 8, designed to receivebolts, not shown, for securing the rack structure to a wall or othersupport.

At spaced apart distances along the wall 7, of each member 5, the metalis pressed in wardly to form means entering into the formations ofpockets for receiving the inner ends of insulator supporting arms orunits 9. This arm receiving portion, it will be noted, is shaped toprovide a wall at having a top contacting edge for the arm 9, walls I)having sidecontacting portions and a bottom contacting portion for saidarm, the latter being disposed between the side walls Z). In

the members are formed or shaped separately, after which they areassembled in the manner particularly shown by Figure 2.

It will be seen that when the two angle members constituting the baseare assembled, the base structure will comprise two base portions andtwo parallel walls, said walls having portions thereof in contact witheach other and shaped to form pockets 10 for receiving the inner ends ofthe insulator supporting arms 9.

Arms 9 are preferably made from a single piece of metal bent upon itselfto form, an outer eye 9 inner end portions 9*, adapted to straddle thecontacting portions a of the parallel walls; and intermediate portions9.

lVhen the parts are assembled the inner ends 9 of the insulatorsupporting arms, are entered in the pockets 10, with portions of therespective ends in contact with the walls (a, and flanges e of the saidends in contact with the upper edges of the walls a. The side and bottomportions of the said arm ends engage with the side walls Z), and thebottom portions 0 This construction the manufacture of the supportingbracket,

provides bearings for the flanges c of the arms, as well as bearings forthe front, sides, and bottoms of the ends of the insulator supportingarms.

12 designates rivets adapted to be passed tl'irough openings formed inthe supporting arms and the base. Attention called to the fact that inboth forms of my invention, (see Figs. 4 and 5) the constructionsprovide a relatively large metallic bearing for the rivets, or strongcross-sectional metallic portions adjacent the rivet openings.

The construction, including the said walls, contacting surfaces, themass of metal adjacent the rivet openings, and the rivets passed throughthe said metal, provides simple and efficient cooperating means forrigidly securing the supporting arms to the base and preventingdisplacement of the said arms when subjected to the strains and stressesmet with in service.

In the form of Figure 5, I have shown a slight modification from theconstruction of the form of Figure 1. In this latter form the anglesbetween the walls a and b are not as abrupt as is the first form and thesides of the inner ends of the insulator sup porting arms are shaped asshown at 71,'to correspond with the contour of thewalls a and 5;otherwise the construction is the same.

I have shown the usual rod 13 for carrying the insulator spools 14, thisrod being inserted through the eyes 9 of the arms 9.

hat I claim is:

1. In an insulator supporting bracket, a base including parallel walls,said walls 'having contacting portions and shaped to form an armreceiving pocket adjacent the contacting portions, an insulatorsupporting arm having a portion thereoi entered in the pocket andstraddling the contacting base portions, and means co -acting with thecon tact-ing portions for fixedly securing the arm in. the pocket.

2. In an insulator supporting bracket, a

base including parallel walls, said walls having contacting portions andshaped to form an arm receiving pocket adjacent the said portions, aninsulator supporting arm having its inner end straddling the contactingportions and located in the pocket, and means passed through the innerend of the arm and the said contacting portions for securing the arm inthe pocket.

3. In an insulator supporting bracket, a base including two metallicangle members having longitudinally extending parallel walls, said wallsat intervals along their lengths being brought into contact with eachother and being spaced apart between the contacting portions, and aninsulator supporting arm rigidly secured to the said contacting portionsof the base.

4. In an insulator supporting bracket, a base including two spacedmetallic angle members having longitudinally extending parallel walls,said walls at intervals along their lengths being brought into contactwith each other, and an insulator supporting arm having its inner endstraddling the contacting portions and riveted thereto. I

5. In an insulator supporting bracket, a base including two spacedmetallic angle members having longitudinally extending parallel walls,said walls at intervals along their lengths being brought into contactwith each other and shaped to receive insulator supporting arms, ametallic insulator sup porting arm having divided inner ends straddlingthe contacting portions thereby forn'iing with the said contactingportions a mass of metal for a rivet, and a rivet passed through saidmetallic mass.

In testimony whereof I afiix my signature.

ELMER W. LUNDELL.

